CN112617884A

CN112617884A - Ear-hanging type stethoscope

Info

Publication number: CN112617884A
Application number: CN202011639198.XA
Authority: CN
Inventors: 王景昭; 刘孟
Original assignee: Individual
Current assignee: Nanjing Jianzhilv Cloud Medical Technology Co ltd
Priority date: 2020-12-31
Filing date: 2020-12-31
Publication date: 2021-04-09
Anticipated expiration: 2040-12-31
Also published as: CN112617884B

Abstract

The invention relates to the technical field of medical instruments, in particular to an ear-hanging stethoscope, which comprises an auditory tube, wherein the middle position of the auditory tube is fixedly communicated with an upper rubber tube, the other end of the upper rubber tube is fixedly connected with a connecting block, the lower end of the connecting block is rotatably connected with a lower rubber tube, and the other end of the lower rubber tube is fixedly connected with a stethoscope head; the hearing device comprises a hearing part and a hearing aid, wherein the hearing part comprises earplugs fixedly connected to the outer circumferential surfaces of two ends of a hearing tube, and the earplugs are fixedly connected with profiling rods adapted to human ears; the conduction component comprises two fixing strips fixedly connected to two end faces of the connecting block, and the two fixing strips and the auditory tube are in limit fixed arrangement; the protective component comprises a fixing block fixedly arranged on the outer circumferential surface of the lower rubber tube; the problem that cotton wool, fibers or dust of clothes can block the ear tubes of the stethoscope because the ear sinuses and the auditory canal are not tightly closed when the stethoscope is used for auscultation is solved.

Description

Ear-hanging type stethoscope

Technical Field

The invention relates to the technical field of medical instruments, in particular to an ear-hanging stethoscope.

Background

As a commonly used diagnostic tool, stethoscopes are used to collect and amplify sounds emanating from the heart, lungs, arteries, veins and other internal organs. In the acoustic stethoscope in the prior art, the auscultation effect is poor when the ear sinuses are not tightly fit with the auditory meatus of a listener in the using process; if the stethoscope is left in a pocket or is not maintained regularly when not in use, cotton wool, fibers or dust from the clothes can block the ear tubes of the stethoscope and need regular maintenance and cleaning to avoid the problem; and the high-quality sound transmission effect of stethoscope is relevant with the contact ratio between stethoscope and listener's auditory canal, and the contact ratio is better, can transmit the internal sound of patient into the listener ear more, so will often inspect the stethoscope state troublesome poeration, waste time and energy.

Disclosure of Invention

The invention aims to provide an ear hanging type stethoscope, which solves the problems that the ear sinuses are not tightly adhered to the auditory meatus and cotton wool, fibers or dust of clothes can block the ear tubes of the stethoscope during auscultation of the stethoscope in the background technology.

The technical scheme of the invention is as follows: an ear hanging type stethoscope comprises an auditory tube, wherein an upper rubber tube is fixedly communicated with the middle position of the auditory tube, the other end of the upper rubber tube is fixedly connected with a connecting block, the lower end of the connecting block is rotatably connected with a lower rubber tube, and the other end of the lower rubber tube is fixedly connected with a stethoscope head; the hearing device comprises a hearing part and a hearing aid, wherein the hearing part comprises earplugs fixedly connected to the outer circumferential surfaces of two ends of a hearing tube, and the earplugs are fixedly connected with profiling rods adapted to human ears; the conduction component comprises two fixing strips fixedly connected to two end faces of the connecting block, and the two fixing strips and the auditory tube are in limit fixed arrangement; and the protective component comprises a fixing block fixedly arranged on the outer circumferential surface of the lower rubber tube.

As a preferred scheme in the invention, the listening component further comprises an earplug inner cavity arranged in the earplug, the earplug inner cavity is communicated with the inner cavity of the listening tube, an inner circular groove is arranged on the side surface of the end of the earplug, a stop block is arranged at the end of the earplug, a cylindrical brush is fixedly connected at the position of the stop block close to the center of one end surface of the earplug, the cylindrical brush is rotatably clamped in the inner cavity of the earplug, an inner circular fixture block is fixedly connected at one end surface of the stop block close to the earplug, the inner circular fixture block is rotatably sleeved in the inner circular groove to limit and fix the stop block, a limiting circular groove is arranged in the end surface of the stop block far from the earplug, the circumferential line of the limiting circular groove is tangent to the circle center of the stop block, the circumferential diameter of the limiting circular groove is smaller than the outer circumferential diameter of the listening tube, two limiting grooves are arranged on the inner circumferential, two the inside one-to-one of spacing groove slides and is provided with the stopper, the one end of stopper and the bottom surface spring coupling of spacing groove, the outer periphery circumference of dog is fixedly connected with circular rail still. When the stethoscope is needed to be used, the stopper is manually moved to drive the cylindrical brush to be separated from the inner cavity of the earplug, the inner circular fixture block is driven to be separated from the inner circular groove, then the earplug is aligned to the auditory canal of a listener, the profiling rod is sleeved on the ear of the listener, and the stethoscope is worn on the ear of the listener through the profiling rod, so that the phenomenon that the listener wears the stethoscope and feels pain when working for a long time; when the auscultation is finished, the listener removes the stop block from the outer circumference of the auscultation tube, removes the profiling rods from the two ears, then takes down the stethoscope, rotates the connecting bent plate again to insert the cylindrical brush into the inner cavity of the earplug, and cotton wool, fibers or dust of clothes cannot enter the auscultation tube when the stethoscope is placed in the pocket, so that the auscultation tube of the stethoscope is prevented from being blocked, the stethoscope is effectively protected from the ears, the regular maintenance and cleaning time of the stethoscope is prolonged, and the sound transmission effect of the stethoscope is ensured; and when the cylindricality brush card was established inside the earplug inner chamber, can drive the cylindricality brush through rotatory dog and rotate in the earplug inner chamber, do from the ear to the earplug inner chamber and work as simple cleanness, prevent that the earwax in the listener use in the duct from getting into.

As a preferable scheme in the invention, the listening component further comprises a rotating groove formed in the profiling rod vertically and directly below the earplug, a rotating shaft is fixedly arranged in the rotating groove, two ends of the rotating shaft are fixedly connected to the profiling rod, a rotating block is rotatably sleeved on the circumferential surface of the rotating shaft, a connecting curved plate is fixedly connected to the circumferential side surface of the rotating block, a curved block matched with the outer circumference of the stop block is fixedly connected to the other end of the connecting curved plate, a track groove along the circumferential direction of the curved block is formed in the curved block, and the circular track is rotatably arranged in the track groove. When the listener takes the stethoscope on the ear through the profiling rod, the manual connection bent plate that grasps is rotated as the center of rotation with the axis of rotation, through the drive of connecting the bent plate, make near the listening pipe periphery of earlobe is aimed at to spacing circular slot, establish spacing circular slot card on the periphery of listening pipe, extrude the circumference lateral wall of listening pipe with this stopper, thereby accomplish the spacing fixed to the dog, guarantee listener auricular sinus and duct driving fit in the use, reach better auscultation effect with this.

As a preferred scheme in the invention, the conducting component further comprises two upper fixing sleeves fixedly sleeved on the outer circumferential surface of the auditory tube, the two upper fixing sleeves are close to the two end positions of the auditory tube, the outer circumferential surface of the auditory tube is also fixedly sleeved with two lower fixing sleeves, the two lower fixing sleeves are close to the axial central position of the auditory tube, the outer circumferential surface of the auditory tube is fixedly provided with metal strips along the axial direction of the auditory tube, and the metal strips are fixedly connected to the upper fixing sleeves and the metal strips one by one; the other end fixed connection of fixed strip is sheathe in under the fixed, the carousel groove has been seted up to the inside of connecting block, the one end fixedly connected with carousel that the auscultation head was kept away from to the rubber tube down, the carousel rotates the cover and establishes the inside in carousel groove. When the listener goes to listen to the patient from the heart through handheld auscultation head when using the stethoscope, the lung, the artery, the sound that vein and other internal organs department sent, at the removal in-process, lower rubber tube can drive the carousel and rotate at the carousel inslot, avoid removing the in-process lower rubber tube of auscultation head with this and take place to buckle, prevent to cause down the rubber tube damage of buckling with this, the life of extension stethoscope, prevent simultaneously that the listener from placing the stethoscope inside the pocket after the use, lower rubber tube takes place to buckle and causes the harm, thereby the life of effectual extension stethoscope.

As a preferred scheme in the invention, the protective component further comprises a pushing block which is slidably arranged on the outer circumferential surface of the lower rubber tube, the pushing block is slidably arranged between the fixed block and the auscultation head, one end surface of the pushing block, which is close to the auscultation head, is fixedly connected with four rubber strips, the four rubber strips are fixedly connected to four corner ends of the pushing block in a one-to-one correspondence manner, and the other ends of the four rubber strips are fixedly connected to the axial outer circumferential surface of the auscultation head; four round corners departments of fixed block open and have seted up the pivot groove one by one, the inside in pivot groove is rotated and is provided with the pivot, the pivot passes through the torsional spring and is close to the one end side fixed connection who promotes the piece with the pivot groove, the winding has the connecting wire on the periphery of pivot, the pivot groove is close to the side that promotes piece one end and has seted up the through-hole, one end of connecting wire is fixed to be passed fixed connection by the through-hole and is being close to on the terminal surface that promotes the piece is close to the fixed block. When the male listener listens to female patient's heart position, under the prerequisite of bringing the stethoscope, promote the piece through manual promotion, make and promote the piece and be close to the position of auscultation head, make the rubber strip outwards open along with the removal that promotes the piece simultaneously, form the hand protector to this avoids listener and female patient skin contact, prevents the awkwardness.

Advantageous effects

The invention provides an ear-hanging stethoscope by improvement, compared with the prior art, the invention has the following improvement and advantages:

the rotating block, the connecting bent plate, the stop block and the cylindrical brush are arranged, so that the cylindrical brush is inserted into the inner cavity of the earplug, cotton wool, fibers or dust of clothes can be prevented from entering an auditory tube of the stethoscope when the cylindrical brush is placed in a pocket, and when the cylindrical brush is clamped in the inner cavity of the earplug, the cylindrical brush can be driven to rotate in the inner cavity of the earplug through the rotating stop block, so that the inner cavity of the earplug is cleaned simply by ears, and earwax in the auditory canal is prevented from entering the earplug when a listener uses the earplug; when the listener takes the stethoscope on the ear through the profiling rod, the manual connection bent plate that grasps is rotated as the center of rotation with the axis of rotation, through the drive of connecting the bent plate, make near the listening pipe periphery of earlobe is aimed at to spacing circular slot, establish spacing circular slot card on the periphery of listening pipe, extrude the circumference lateral wall of listening pipe with this stopper, thereby accomplish the spacing fixed to the dog, guarantee listener auricular sinus and duct driving fit in the use, reach better auscultation effect with this.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a top view of the present invention.

Fig. 3 is a perspective view of fig. 2 taken in section a-a.

Fig. 4 is an enlarged view at Q in fig. 3.

Fig. 5 is an enlarged view of fig. 3 at W.

Fig. 6 is a perspective view of fig. 2 taken in section D-D.

Fig. 7 is an enlarged view of fig. 6 at E.

Fig. 8 is a perspective view of the cross-section at S-S in fig. 2.

Fig. 9 is an enlarged view of fig. 8 at R.

In the figure, an auditory canal 10, an upper rubber tube 11, a lower rubber tube 12, an auscultation head 13, an earplug 14, a profiling rod 15, an upper fixing sleeve 16, a lower fixing sleeve 17, a metal strip 18, a fixing strip 19, a connecting block 20, a fixing block 21, an earplug inner cavity 22, a rotating groove 23, a rotating shaft 24, a rotating block 25, a connecting curved plate 26, a stop block 27, a cylindrical hairbrush 28, a circular rail 29, a curved block 30, a rail groove 31, a limiting circular groove 32, an inner circular groove 33, an inner circular clamping block 34, a limiting groove 35, a limiting block 36, a rotary disc groove 37, a rotary disc 38, a pushing block 39, a rubber strip 40, a rotary shaft groove 41, a rotary shaft 42, a connecting wire 43 and a through.

Detailed Description

The present invention will be described in detail with reference to fig. 1 to 9, and the technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

As shown in fig. 1 and 2, the invention is an ear-hanging stethoscope, which comprises an auditory tube 10, wherein an upper rubber tube 11 is fixedly communicated with the middle position of the auditory tube 10, the other end of the upper rubber tube 11 is fixedly connected with a connecting block 20, the lower end of the connecting block 20 is rotatably connected with a lower rubber tube 12, and the other end of the lower rubber tube 12 is fixedly connected with a stethoscope head 13; the listening component comprises earplugs 14 fixedly connected to the outer circumferential surfaces of two ends of the auditory tube 10, and profiling rods 15 matched with human ears are fixedly connected to the earplugs 14; the conduction component comprises two fixing strips 19 fixedly connected to two end faces of the connecting block 20, and the two fixing strips 19 and the auditory tube 10 are in limit fixed arrangement; and the protective component comprises a fixing block 21 fixedly arranged on the outer circumferential surface of the lower rubber pipe 12.

As shown in fig. 3 and 4, the listening component further includes an earplug inner cavity 22 disposed inside the earplug 14, the earplug inner cavity 22 is communicated with the inner cavity of the listening tube 10, an inner circular groove 33 is disposed on a side surface of an end of the earplug 14, a stopper 27 is disposed at the end of the earplug 14, a cylindrical brush 28 is fixedly connected to the stopper 27 near a center of the end surface of the earplug 14, the cylindrical brush 28 is rotatably clamped inside the earplug inner cavity 22, an inner circular fixture block 34 is fixedly connected to an end surface of the stopper 27 near the earplug 14, the inner circular fixture block 34 is rotatably sleeved inside the inner circular groove 33 to limit and fix the stopper 27, a limiting circular groove 32 is disposed in an end surface of the stopper 27 far from the earplug 14, a circumferential line of the limiting circular groove 32 is tangent to a center of the stopper 27, a circumferential diameter of the limiting circular groove 32 is smaller than an outer circumferential diameter of the listening tube 10, two limiting grooves 35 are disposed on a side wall of the inner circumference 27, the, limiting blocks 36 are arranged inside the two limiting grooves 35 in a one-to-one corresponding sliding mode, one end of each limiting block 36 is connected with the bottom face of each limiting groove 35 through a spring, and circular rails 29 are fixedly connected to the circumferential direction of the outer circumferential face of each stop block 27.

Furthermore, when the stethoscope is needed to be used, the stopper 27 is manually moved to drive the cylindrical brush 28 to be separated from the inner cavity 22 of the earplug, and simultaneously drive the inner circular fixture block 34 to be separated from the inner circular groove 33, then the earplug 14 is aligned with the ear canal of the listener, the profiling rod 15 is sleeved on the ear of the listener, and the stethoscope is worn on the ear of the listener through the profiling rod 15, so that the phenomenon that the listener wears the stethoscope and feels pain when working for a long time; when the auscultation is finished, the listener removes the stop block 27 from the outer circumference of the auscultation tube 10, removes the dummy rods 15 from the ears, then takes off the stethoscope, rotates the connecting curved plate 26 again to insert the cylindrical brush 28 into the inner cavity 22 of the earplug, and then the cotton wool, fiber or dust of clothes can not enter the auscultation tube 10 when the stethoscope is placed in a pocket, so as to avoid blocking the auscultation tube 10 of the stethoscope, effectively protect the stethoscope from the ears, prolong the regular maintenance and cleaning time of the stethoscope and ensure the sound transmission effect of the stethoscope; when the cylindrical brush 28 is clamped in the earplug inner cavity 22, the cylindrical brush 28 can be driven to rotate in the earplug inner cavity 22 through the rotary stop block 27, so that the earplug inner cavity 22 is cleaned simply by ears, and earwax in the ear canal is prevented from entering the ear canal during the use process of a listener.

As shown in fig. 6 and 7, the listening component further includes a rotating groove 23 formed on the profiling rod 15 vertically under the earplug 14, a rotating shaft 24 is fixedly disposed in the rotating groove 23, two ends of the rotating shaft 24 are fixedly connected to the profiling rod 15, a rotating block 25 is rotatably sleeved on the circumferential surface of the rotating shaft 24, a connecting curved plate 26 is fixedly connected to the outer circumferential side of the rotating block 25, a curved block 30 matched with the outer circumference of the stop block 27 is fixedly connected to the other end of the connecting curved plate 26, a track groove 31 along the circumferential direction of the curved block 30 is formed in the curved block 30, and the circular track 29 is rotatably disposed in the track groove 31.

Furthermore, when the listener brings the stethoscope to the ear through the profiling rod 15, the listener manually grasps the connecting curved plate 26 to rotate by taking the rotating shaft 24 as the rotating center, the limiting circular groove 32 is aligned to the circumferential surface of the auditory canal 10 near the earlobe through the driving of the connecting curved plate 26, the limiting circular groove 32 is clamped on the circumferential surface of the auditory canal 10, the circumferential side wall of the auditory canal 10 is extruded by the limiting block 36, thereby completing the limiting fixation of the stop block 27, ensuring the close fit between the ear sinus and the ear canal of the listener in the using process, and achieving better auscultation effect.

As shown in fig. 3 and 5, the conducting component further includes two upper fixing sleeves 16 fixedly sleeved on the outer circumferential surface of the auditory canal 10, the two upper fixing sleeves 16 are close to two end positions of the auditory canal 10, the outer circumferential surface of the auditory canal 10 is further fixedly sleeved with two lower fixing sleeves 17, the two lower fixing sleeves 17 are close to the axial center position of the auditory canal 10, the outer circumferential surface of the auditory canal 10 is fixedly provided with metal strips 18 along the axial direction of the auditory canal 10, and the metal strips 18 are fixedly connected to the upper fixing sleeves 16 and the metal strips 18 one by one; the other end of the fixing strip 19 is fixedly connected to the lower fixing sleeve 17, a turntable groove 37 is formed in the connecting block 20, a turntable 38 is fixedly connected to one end, far away from the auscultation head 13, of the lower rubber tube 12, and the turntable 38 is rotatably sleeved in the turntable groove 37.

Further, when the listener goes to listen to the patient from the heart through handheld auscultation head 13 when using the stethoscope, the lung, the artery, the sound that vein and other internal organs department sent, in the removal process, rubber tube 12 can drive carousel 38 and rotate in carousel groove 37 down, rubber tube 12 takes place to buckle under the in-process of avoiding removing auscultation head 13 with this, prevent to cause down rubber tube 12 and buckle the damage, the life of extension stethoscope, prevent simultaneously that the listener from placing the stethoscope inside the pocket after the use, rubber tube 12 takes place to buckle and causes the damage down, thereby the life of effectual extension stethoscope.

As shown in fig. 8 and 9, the protecting member further includes a pushing block 39 slidably disposed on the outer circumferential surface of the lower rubber tube 12, the pushing block 39 is slidably disposed between the fixing block 21 and the stethoscope head 13, one end surface of the pushing block 39 close to the stethoscope head 13 is fixedly connected with four rubber strips 40, the four rubber strips 40 are fixedly connected to four corner ends of the pushing block 39 in a one-to-one correspondence manner, and the other ends of the four rubber strips 40 are fixedly connected to the axial outer circumferential surface of the stethoscope head 13; four round corners of fixed block 21 are opened and are seted up pivot groove 41 one by one, the inside rotation of pivot groove 41 is provided with pivot 42, pivot 42 is close to the one end side fixed connection who promotes piece 39 through torsional spring and pivot groove 41, the winding has connecting wire 43 on the periphery of pivot 42, the side that pivot groove 41 is close to the one end that promotes piece 39 has seted up through-hole 44, the one end of connecting wire 43 is passed fixed connection by through-hole 44 and is being pushed the piece 39 and be close to the terminal surface of fixed block 21.

Further, when a male listener listens to the heart of a female patient, on the premise of bringing the stethoscope, the pushing block 39 is pushed manually, so that the pushing block 39 is close to the stethoscope head 13, and the rubber strip 40 is opened outwards along with the movement of the pushing block 39 to form a hand guard, so that the contact between the listener and the skin of the female patient is avoided, and embarrassment is prevented.

Claims

1. An ear-hanging stethoscope comprising an auditory tube (10), characterized in that: an upper rubber tube (11) is fixedly communicated with the middle position of the auditory tube (10), the other end of the upper rubber tube (11) is fixedly connected with a connecting block (20), the lower end of the connecting block (20) is rotatably connected with a lower rubber tube (12), and the other end of the lower rubber tube (12) is fixedly connected with a auscultation head (13);

the hearing device comprises a hearing part, a sound tube (10) and a sound processing part, wherein the hearing part comprises earplugs (14) fixedly connected to the outer circumferential surfaces of two ends of the hearing tube, and the earplugs (14) are fixedly connected with profiling rods (15) matched with human ears;

the conduction component comprises two fixing strips (19) fixedly connected to two end faces of the connecting block (20), and the two fixing strips (19) and the auditory tube (10) are in limit fixed arrangement;

and the protective component comprises a fixing block (21) fixedly arranged on the outer circumferential surface of the lower rubber pipe (12).

2. An ear-hung stethoscope according to claim 1, wherein said stethoscope further comprises: the listening component further comprises an earplug inner cavity (22) arranged inside the earplug (14), the earplug inner cavity (22) is communicated with an inner cavity of the listening tube (10), an inner circular groove (33) is formed in the side face of the end of the earplug (14), a stop block (27) is arranged at the end of the earplug (14), a cylindrical brush (28) is fixedly connected to the center of one end face, close to the earplug (14), of the stop block (27), the cylindrical brush (28) is rotationally clamped in the earplug inner cavity (22), an inner circular fixture block (34) is fixedly connected to one end face, close to the earplug (14), of the stop block (27), the inner circular fixture block (34) is rotationally sleeved inside the inner circular groove (33) so as to limit and fix the stop block (27), a limit circular groove (32) is formed in the end face, far away from the earplug (14), of the stop block (27), and the circle center of the stop block (27) is tangent to the line of the limit circular groove (32, the circumference diameter of spacing circular slot (32) is less than the outer circumference diameter of auditory canal (10), two spacing grooves (35) have been seted up to the interior circumference lateral wall of dog (27), two radial symmetry setting with dog (27) in spacing groove (35), two the inside one-to-one of spacing groove (35) slides and is provided with stopper (36), the bottom surface spring coupling of the one end of stopper (36) and spacing groove (35), the outer periphery circumference of dog (27) still fixedly connected with circular rail (29).

3. An ear-hung stethoscope according to claim 2, wherein said stethoscope further comprises: listening part is still including offering rotation groove (23) on profiling pole (15) under earplug (14) is vertical, it is provided with axis of rotation (24) to rotate groove (23) internal fixation, axis of rotation (24) both ends fixed connection is on profiling pole (15), it is equipped with turning block (25) to rotate the cover on the periphery of axis of rotation (24), the crooked board (26) are connected to the periphery side fixedly connected with of turning block (25), the crooked piece (30) of the outer circumference cooperation of the other end fixedly connected with and dog (27) of connecting crooked board (26), the inside of crooked piece (30) is seted up along the track groove (31) of crooked piece (30) circumference, circular track (29) are rotated and are set up in track groove (31).

4. An ear-hung stethoscope according to claim 1, wherein said stethoscope further comprises: the conducting component further comprises two upper fixing sleeves (16) fixedly sleeved on the outer circumferential surface of the auditory tube (10), the two upper fixing sleeves (16) are close to two end positions of the auditory tube (10), the outer circumferential surface of the auditory tube (10) is further fixedly sleeved with two lower fixing sleeves (17), the two lower fixing sleeves (17) are close to the axial center position of the auditory tube (10), metal strips (18) are fixedly arranged on the outer circumferential surface of the auditory tube (10) along the axial direction of the auditory tube (10), and the metal strips (18) are fixedly connected to the upper fixing sleeves (16) and the metal strips (18) one by one; the other end fixed connection of fixed strip (19) is on fixed cover (17) down, carousel groove (37) have been seted up to the inside of connecting block (20), one end fixedly connected with carousel (38) of auscultation head (13) are kept away from in lower rubber tube (12), carousel (38) rotate the cover and establish the inside in carousel groove (37).

5. An ear-hung stethoscope according to claim 3, wherein said stethoscope further comprises: the protection component further comprises a pushing block (39) which is arranged on the outer circumferential surface of the lower rubber tube (12) in a sliding mode, the pushing block (39) is arranged between the fixing block (21) and the auscultation head (13) in a sliding mode, one end face, close to the auscultation head (13), of the pushing block (39) is fixedly connected with four rubber strips (40), the four rubber strips (40) are fixedly connected to four round-corner ends of the pushing block (39) in a one-to-one correspondence mode, and the other ends of the four rubber strips (40) are fixedly connected to the axial outer circumferential surface of the auscultation head (13); four round corners departments of fixed block (21) open and have seted up pivot groove (41) one by one, the inside rotation of pivot groove (41) is provided with pivot (42), pivot (42) are close to the one end side fixed connection who promotes piece (39) through torsional spring and pivot groove (41), the winding has connecting wire (43) on the periphery of pivot (42), through-hole (44) have been seted up to the side that pivot groove (41) are close to and promote piece (39) one end, the one end of connecting wire (43) is passed fixed connection by through-hole (44) admittedly and is being close to on the terminal surface that fixed block (21) was close to in promotion piece (39).